title: N-Butanoyl-N-(3-chloro-1,4-dioxonaph-thalen-2-yl)butanamide.
abstract: In the title compound, C18H18ClNO4, the imide group with its two alkyl substituents is approximately perpendicular to the plane of the naphtho-quinone ring system [dihedral angle = 78.5 (1)°]. Further, the imide carbonyl groups are oriented in an anti sense. In the crystal, the substituted naphtho-quinone rings form π-π stacks in the a-axis direction [perpendicular centroid-centroid distance = 3.209 (2) Å and slippage = 4.401 Å].
authors.affiliation: Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA.
authors.forename: Ray J
authors.initials: RJ
authors.lastname: Butcher
authors.forename: Solomon
authors.initials: S
authors.lastname: Berhe
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Anderson
authors.forename: Oladapo
authors.initials: O
authors.lastname: Bakare